Resistance exercises from elastic tube has been used as part of the rehabilitation and maintenance of muscle tone levels in different scenarios, from disease conditions to the sports universe. There is the convenience and low cost of the instrument, which can provide impact on clinical and economic framework in case of spillage of use strategies. In a recent search, the investigators were not observed data on the reliability and reproducibility of a specific test for this tool and in this sense, it seems pertinent to undertake research on the topic. Objectives: To determine the reliability and reproducibility by comparison with a isokinetic muscle strength test located â fatigue held in elastic tube and compare the results of a training protocol for muscle strength gain in both methods, elastic tube and dynamometer. Methods: Participants will perform the muscular endurance test localized fatigue, on two occasions, with an interval of seven days between them. Everyone will accomplish so much in the elastic tube, as in the isokinetic dynamometer. It will be held evaluator analysis intra and inter evaluator. After first stage of the study to determine the reliability test, the participants will undergo three weeks of training to gain muscular endurance, distributed in two groups G1 (training in the elastic tube) and G2 (training in isokinetic dynamometer) previously randomized. It will use the intra-class correlation coefficient with 95% confidence interval to check the repeatability and the Kappa coefficient with 95% confidence interval for reproducibility. To compare the responses of training, the distribution will be made as to the normality of the data by the Kolmogorov-Smirnov test. In the case of normal distribution, the Student's t-test for unpaired data and Mann-Whitney will be adopted if there is no normal distribution.